KR101985448B1 - Marine nuclear plant and installation method of it - Google Patents

Abstract

The present invention relates to a structure including a structure including a gate mounted on a GBS and a pants seated on a bottom surface of a GBS, a structure in which GBS is installed in the ocean, seawater is introduced into the vessel, pants on which facilities including a reactor and a generator are mounted, The present invention relates to a marine nuclear power plant and a construction method thereof that are free from the constraint of the installation site of the plant from the method of discharging the inflowed seawater and are easy to construct and enable active countermeasures using abundant seawater in case of fire or earthquake.

Description

MARINE NUCLEAR PLANT AND INSTALLATION METHOD OF IT <br> <br> <br> Patents - stay tuned to the technology MARINE NUCLEAR PLANT AND INSTALLATION METHOD OF IT

The present invention relates to a marine nuclear power plant and a method of constructing the same. More particularly, the present invention relates to a marine nuclear power plant and a marine nuclear power plant, which are free from constraints of a plant installation site, And a method of constructing the same.

Nuclear power generation has been spotlighted as an alternative to fossil fuels, which are becoming depleted due to the acceleration of industrial development and the price is surging.

However, nuclear power has brought back to mankind that safety measures and disaster prevention measures must be thoroughly observed, as evidenced by the accident at Fukushima Nuclear Power Station, which was caused by a recent earthquake in Northeast Japan.

The direct cause of the Fukushima Nuclear Power Plant was the flooding of the nuclear power plant due to the super-tsunami resulting from the earthquake. After the flooding, the reactor safety system and the emergency generator became inoperable, causing the accidental leakage of radioactivity.

Normally, onshore nuclear power plants constructed breakwater to cope with the tsunami and built a nuclear power plant in a higher area than the sea level. However, the breakwater and construction site of the large tsunami caused by the Great East Japan Earthquake were also useless.

Therefore, nuclear power plants have been researched and developed on the basis of the above-mentioned viewpoint, which is installed on the sea where the influence of earthquake and tsunami is relatively small.

However, the nuclear power plant is not only bulky and heavy, but also has a very large site to be installed. In order to construct a nuclear power plant on the sea, There have been a lot of economical and technological constraints.

Disclosure of the Invention The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a marine nuclear power plant and a construction method thereof, which are free from constraints of a plant installation site and are easy to construct, and capable of positively responding by using abundant seawater in case of fire or earthquake Method.

In order to accomplish the above object, the present invention provides a gravity base structure (hereinafter, referred to as 'GBS') installed at the sea and surrounded by barrier ribs at four sides. A gate provided on one of the partitions; And a barge installed in the GBS and equipped with facilities including a power generation facility.

The height from the bottom of the GBS to the top of the bulkhead may be higher than the height from the sea floor to the sea level.

The GBS further includes a support facility disposed at one side of the partition and electrically connected to the pants and connected to the pipeline, and a baffle disposed at the other side of the partition and capable of loading and unloading a replacement fuel carrier or a waste carrier can do.

The GBS may be made of concrete.

The gate includes a primary gate connected to a bottom edge of the GBS, a secondary gate connected to an upper edge of the primary gate at one side and a secondary gate connected to an upper edge of the bulkhead, And an open / close control room for controlling opening and closing of the primary and secondary gates.

The pants include a first pants on which a first facility including a power generation facility including a reactor and a turbine is mounted, and a second pants on which a second facility including a complex auxiliary building electrically connected to the reactor and the turbine is mounted And the first and second pants may be made of a steel material.

The reactor can be enclosed in concrete.

The first and second facilities may be made of steel.

The marine nuclear power plant may further include a first friction surface formed between the GBS and the seabed, and a second friction surface formed between the pants and the GBS.

According to another embodiment of the present invention, a gravity base structure (hereinafter, referred to as 'GBS') surrounded by a bulkhead and a barge equipped with facilities including a reactor and a generator are transported to the installation site of the ocean ; A second step of installing the GBS on the seabed; A third step of introducing seawater into the GBS by opening a gate provided on a partition wall of the partition; Moving the barge into the GBS and placing it on the bottom of the GBS; And a fifth step of closing the gate and discharging the seawater inside the GBS to the outside.

The fifth step may further include a power generation preparation step of performing electrical connection and piping connection between the power generation auxiliary facility provided inside the bulkhead of the GBS and the facilities of the trousers after the seawater is discharged.

According to the present invention having the above-described configuration, the following effects can be achieved.

First, the present invention can conveniently transport each facility constituting a large-scale nuclear power plant separately to a plurality of pants and to the sea where a nuclear power plant is installed together with GBS.

In the present invention, the nuclear reactor building is enclosed with concrete for safety maintenance, and each facility constituting the nuclear power plant is arranged on the pants of the steel material, whereby the load can be greatly reduced.

In addition, the present invention can prevent damage and malfunction of the nuclear power plant by dispersively supporting the shock waves due to the earthquake when the earthquake occurs by forming friction surfaces between the GBS and the seabed and between the GBS and the pants.

In addition, since the reactor is located below the sea surface, the present invention may also allow emergency cooling by introducing seawater into the GBS in the event of overheating or malfunction.

In addition, since the height of the GBS is higher than the sea level by several tens of meters or more, and all the facilities are disposed inside the pants, which is made of steel, safety can be maintained from natural disasters such as tsunamis and storms.

1 is a cross-sectional schematic view showing the overall structure of a marine nuclear power plant according to an embodiment of the present invention;
2 to 5 are perspective views showing main parts of a marine nuclear power plant according to an embodiment of the present invention.
6 is a block diagram showing a construction method of a marine nuclear power plant according to an embodiment of the present invention.
FIGS. 7 to 10 are perspective views of a method of constructing a marine nuclear power plant according to an embodiment of the present invention,

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic cross-sectional view showing the overall structure of a marine nuclear power plant according to an embodiment of the present invention, and FIGS. 2 to 5 are perspective views showing main parts of a marine nuclear power plant according to an embodiment of the present invention.

2 is a view showing the overall structure of the first pants 400 among the main parts of the present invention and FIG. 3 is a view showing the overall structure of the second pants 500 among the main parts of the present invention, FIG. 4 and FIG. 5 show the overall structure of a gravity base structure (hereinafter, referred to as 'GBS'), which is a main part of the present invention.

It can be seen that the present invention includes the GBS 100 and the gate 200 mounted on the GBS 100 and the pants B placed on the bottom of the GBS 100 as shown in FIG.

The GBS 100 is enclosed by the partition 101 in the four sides of the partition 101 so that the gate 200 is openably and closably mounted on a partition wall 101 to provide a space in which the pants B to be described later is seated, And can be operated by a vessel such as a tugboat.

The pants B are mounted on the bottom surface of the GBS 100 with various types of facilities constituting the marine nuclear power plant P mounted thereon and float up to the installation site such as the GBS 100 to a ship such as a tugboat This is a structure that can be operated by.

It is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or scope of the invention.

First, the GBS 100 is provided with a space in which the trousers B are seated as described above. It is preferable that the GBS 100 is made of a concrete material to maintain the seawater resistance and maintain durability against earthquakes and tsunamis.

The height H from the bottom surface of the GBS 100 to the upper end of the partition wall 101 is a height of the sea bottom surface of the sea bed 900 in order to protect the pants B placed inside the GBS 100 from a tsunami and a storm, (H) up to the height (h)

The marine nuclear power plant P also has a first friction surface 600 between the GBS 100 and the seabed 900 and a second friction surface 700 between the pants B and the GBS 100 The first and second friction surfaces 600 and 700 serve to reduce the seismic load when an earthquake occurs.

The pants B is preferably made of a steel material so as to reduce the load and facilitate transportation. The pants B includes a first facility 410 including a power generation facility including a reactor N and a turbine (not shown) And a second pant 500 on which a second facility 510 including a complex auxiliary building electrically connected to the reactor N and the turbine is mounted, The pants 400 and 500 are preferably made of a steel material.

Here, it is preferable that the vicinity of the reactor N is wrapped with concrete so as to cope with radiation leakage and emergency.

2, the first facility 410 includes a reactor building 411 including a reactor N, an engineering safety related system and related facility zone 411 ', a Chemical and Volume Control Systems (FCS) zone 411 ", a Fusion Neutronics Source zone 411 '", a main control room and associated facility zone 412, an emergency diesel generator zone 413, A reactor makeup water tank 417 and a carbon dioxide storage tank area 416. The diesel oil storage tank section 413 ', the nitrogen and hydrogen storage tank section 414, the turbine building 415, the transformer section 416, 418, a complex building area 419, and the like.

As shown in FIG. 3, the second facility 510 includes a building 511, an ACC D / G (Automatic Combustion Control Diesel Generator) 512, an auxiliary boiler building 513, The water storage tank 513 ', the auxiliary boiler fuel tank 513', the fresh water storage tank 514, the condensate storage tank 511, the sanitary water treatment facility section 516, 516 ', a fire extinguishing pump room and an upper, sewage treatment building 516 " and the like.

The GBS 100 is disposed in the partition 101 along the formation direction of the partition 101 and electrically connected to the pants B, i.e., the first and second facilities 400 and 500, And a docking station 120 disposed at one side of the partition wall 101 and capable of loading and unloading a replacement fuel carrier or a waste carrier line.

4, the support facility 110 includes a primary cooling water heat exchanger building 111, a CCW HX BLDG 111, a primary cooling water inlet and chlorination building 112, a CW intake structure & BLDG, an essential service water intake structure 112 ', a cold machine shop 113, a spare main transformer 114, a spare unit auxiliary transformer 114 ', A spare auxiliary transformer 114' 'for standby for standby, a substation 115, a substation control building 116, and the like.

At this time, the docking station may include a docking port 121 including an access road (not shown) and a helideck 122 for allowing access to the helicopter, as shown in FIG.

Of course, it is preferable that the first and second facilities 410 and 510 are made of a steel material for convenience of transportation by reducing the load.

The gate 200 is connected to the bottom edge of the GBS 100 as shown in FIG. 5 so that the GBS 100 can be installed and the pants B can be inserted into the GBS 100, A secondary gate 220 connected to the upper edge of the primary gate 210 and connected to an upper edge of the primary wall 210 and a secondary gate 220 connected to the upper edge of the primary gate 210, And an opening / closing control room 230 for controlling the opening and closing of the differential gates 210 and 220 may be applied.

The primary gate 210 together with the secondary gate 220 allows the GBS 100 to be fully opened from the GBS 100 when initially intended to fully sink and settle the GBS 100 at the off-site location.

The secondary gate 220 is opened when there is a need to introduce seawater into the GBS 100 as an emergency action due to abnormal operation or overheating of any one of the first and second facilities 410 and 510 .

The opening and closing control room 230 is an area that is electrically and mechanically connected to the first and second gates 210 and 220 to monitor and control the opening and closing operations of the first and second gates 210 and 220.

A method of constructing a marine nuclear power plant according to the above embodiment will be described with reference to FIGS. 6 to 10. FIG.

FIG. 6 is a block diagram showing a method of constructing a marine nuclear power plant according to an embodiment of the present invention, and FIGS. 7 to 10 are views sequentially showing a construction method of a marine nuclear power plant according to an embodiment of the present invention. It is a concept of strabismus.

Reference numerals of the drawings not shown in Figs. 6 to 10 refer to Figs. 1 to 5.

In the present invention, as shown in the drawing, the GBS 100 is installed in the ocean, the seawater is introduced into the ocean, the pants B equipped with the facilities including the reactor and the generator are placed on the GBS 100, It is understood that the method of discharging is performed.

The construction method of a marine nuclear power plant according to an embodiment of the present invention will be described in detail in order.

First, in the first step S1, the operator carries the GBS 100 surrounded by the partition wall 101 and the pants B equipped with the facilities including the reactor and the generator to the installation place of the ocean as shown in Fig.

At this time, it is needless to say that the gate 200 blocks the inside of the GBS 100 and the seawater.

Then, in the second step S2, the operator opens the gate 200 provided on one of the partitions 101 to introduce seawater into the GBS 100, as shown in FIG.

Subsequently, in the third step S3, the operator moves the pants B into the GBS 100 as shown in Fig. 9, and places the pants B on the bottom of the GBS 100 as shown in Fig.

Finally, the worker completes the construction of the marine nuclear power plant P by closing the gate 200 and discharging the seawater inside the GBS 100 to the outside as shown in FIG. 10 in a fourth step (S4) .

Here, after the seawater is discharged, a power generation preparation process for performing electrical connection and piping connection between the support facility 110 provided inside the partition 101 of the GBS 100 and the facilities 410 and 510 of the trousers B The operation of an offshore nuclear power plant (P) will be possible.

As described above, it is an object of the present invention to provide a marine nuclear power plant and a construction method thereof that are free from the constraints of the plant installation site, are easy to construct, and are capable of positively responding using abundant seawater in the event of fire or earthquake .

It will be apparent to those skilled in the art that many other modifications and applications are possible within the scope of the basic technical idea of the present invention.

100 ... GBS 200 ... gate
B ... pants

Claims (11)

Gravity Base Structure (GBS), which is installed in the sea but surrounded by bulkheads in every direction;
A gate provided on one of the partitions; And
And a barge installed in the GBS and equipped with a facility including a power generation facility,
The gate includes:
A primary gate connected to the bottom edge of the GBS,
A second gate connected to the upper edge of the primary gate and an other side connected to an upper edge of the partition,
And an open / close control room installed inside the partition to control opening and closing of the primary and secondary gates. The method according to claim 1,
And the height from the bottom of the GBS to the uppermost end of the partition is higher than the height from the sea floor to the sea surface. The method according to claim 1,
In the GBS,
A support facility disposed at one side of the partition and connected to the pants through a pipe while being electrically connected to the pants;
Further comprising a baffle disposed at the other side of the partition and capable of loading and unloading a replacement fuel carrier or a waste carrier. The method according to claim 1,
Wherein the GBS is made of concrete. delete The method according to claim 1,
The pants,
A first pant equipped with a first facility including a power generation facility including a reactor and a turbine,
A second pant equipped with a second facility including a nuclear reactor and a complex auxiliary building electrically connected to the turbine,
Wherein the first and second pants are made of a steel material. The method of claim 6,
Wherein the reactor is enclosed in concrete. The method of claim 6,
Wherein the first and second facilities are made of a steel material. Gravity Base Structure (GBS), which is installed in the sea but surrounded by bulkheads in every direction;
A gate provided on one of the partitions;
A barge installed in the GBS and equipped with facilities including a power generation facility;
A first friction surface formed between the GBS and the seabed; And
And a second frictional surface formed between said trousers and said GBS. The first step is to transport the gravity base structure (GBS) surrounded by the bulkheads and the barges equipped with facilities including reactors and generators to the installation site of the ocean.
A second step of installing the GBS on the seabed;
A third step of introducing seawater into the GBS by opening a gate provided on a partition wall of the partition;
Moving the barge into the GBS and placing it on the bottom of the GBS; And
And a fifth step of closing the gate and discharging seawater inside the GBS to the outside,
The pants include a first pants on which a first facility including a power generation facility including a reactor and a turbine is mounted, and a second pile on which a second facility including a complex auxiliary building electrically connected to the reactor and the turbine is mounted and,
The gate includes:
A primary gate connected to the bottom edge of the GBS,
A second gate connected to the upper edge of the primary gate and an other side connected to an upper edge of the partition,
And an open / close control room installed inside the partition to control opening and closing of the primary and secondary gates. The method of claim 10,
In the fifth step,
Further comprising a power generation preparation step of performing electrical connection and piping connection between the electricity generating auxiliary facility provided inside the bulkhead of the GBS and the facilities of the pants after the seawater is discharged.

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